seq writes the numbers from first to last in steps of increments. If first or incr
is omitted, it defaults to 1. An omitted incr defaults to 1 even when last is smaller than first.

firstincr, and last are interpreted as floating point values. incr is usually positive if
first is smaller than last, and incr is usually negative if first is greater than last
. When given, the format argument must contain exactly one of the printf-style, floating point output
formats %e, %f, %g.